Switch of straight sprinkling gun

ABSTRACT

Switch of straight sprinkling gun, including an outer sleeve, a middle sleeve, a central tube, a detergent chamber, a main flow tube and a flow damper unit. The middle sleeve is fixedly disposed in the outer sleeve. The central tube is fitted in the middle sleeve. The outer and middle sleeves are synchronously rotatable about the central tube. The detergent chamber surrounds the main flow tube and communicates with one end of the outer sleeve. The flow damper unit includes a flow-guiding hole disposed on the detergent chamber and a communicating section disposed on the outer sleeve. The middle sleeve is formed with an outlet and a first inlet. The central tube is formed with a second inlet. A user can conveniently holds the outer sleeve to real-time adjust the water amount or conduct the detergent contained in the detergent chamber to discharge pure water or mixture of water and detergent.

BACKGROUND OF THE INVENTION

[0001] The present invention is related to a device for adjustingdischarge manner and flow amount of a fluid, and more particularly to aswitch of a straight sprinkling gun or a sprinkling gun provided with abrush at discharging end.

[0002] A conventional straight sprinkling gun substantially is composedof a tube body, a sprinkling head disposed at one end of the tube bodyand a switch valve disposed at the other end of the tube body. When auser uses the sprinkling gun to sprinkle, the user holds the straightsprinkling gun with both hands. When adjusting the water amount to reacha necessary sprinkling strength, the user must pause sprinkling and onehand of the user must leave the holding section and move to the switchvalve for clockwise or counterclockwise rotating the same. Then, thehand is moved back to the holding section to proceed with thesprinkling. This is inconvenient to the user.

[0003] Furthermore, as shown in FIG. 8, during sprinkling, sometimes itis necessary to use a detergent such as a soap water to help incleaning. Accordingly, the middle section of the tube body A is providedwith a chamber B reciprocally surrounding the tube body A. A detergentadding hole C is formed on the chamber B and equipped with an openablecover. The tube body A is further formed with a communicating hole A1,whereby after the chamber B is moved, the chamber B is communicated withor not communicated with the tube body A. In use, the soap water isadded from the detergent adding hole C into the chamber B and then thedetergent adding hole C is closed. The switch valve is opened and thewater flows through the tube body A and discharges from the sprinklinghead. (At this time, the chamber B is not communicated with the tubebody A.) When soap water is needed, the chamber B is moved tocommunicate with the tube body A, whereby the soap water is mixed withthe clean water and conducted and discharged.

[0004] According to the above arrangement, the consumption of the soapwater is determined by the amount of the water flow. In the case that itis not desired to consume soap water too fast, the user must pausesprinkling to adjust the switch valve and then proceed with thesprinkling. This is also quite inconvenient to the user.

[0005] In the above sprinkling gun structure, the soap water selectionswitch and the water amount controlling switch are separately disposedso that it is inconvenient for a user in adjustment.

SUMMARY OF THE INVENTION

[0006] It is therefore a primary object of the present invention toprovide a switch of a straight sprinkling gun, in which the water amountis conveniently and real-time controlled without affecting sprinklingoperation.

[0007] It is a further object of the present invention to provide theabove switch of the straight sprinkling gun which has a design meetinghuman configuration for convenient operation.

[0008] It is still a further object of the present invention to providethe above switch of the straight sprinkling gun in which by one action,whether the soap water is conducted and discharged and the consumptionspeed of the soap water are real-time and conveniently controlled. Auser can on one hand sprinkle and on the other hand conduct the soapwater without affecting the sprinkling and cleaning operation.

[0009] According to the above objects, the switch of straight sprinklinggun of the present invention includes an outer sleeve, a middle sleeve,a central tube, a detergent chamber, a main flow tube and a flow damperunit.

[0010] The present invention can be best understood through thefollowing description and accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]FIG. 1 is a perspective exploded view of a preferred embodiment ofthe present invention;

[0012]FIG. 2 is a side view of the preferred embodiment of the presentinvention;

[0013]FIG. 3 is a longitudinal sectional view of the preferredembodiment of the present invention;

[0014] FIGS. 4I, 4II, 4III, 4IV are front, side, rear and longitudinalsectional views of the outer sleeve of the preferred embodiment of thepresent invention;

[0015] FIGS. 5V, 5VI, 5VII, 5VIII, 5IX are side, A-A sectional, B-Bsectional, rear and longitudinal sectional views of the middle sleeve ofthe preferred embodiment of the present invention;

[0016] FIGS. 6X, 6XI, 6XII, 6III are front, top, rear and longitudinalsectional views of the central tube of the preferred embodiment of thepresent invention;

[0017] FIGS. 71V, 7XV are front and side views of the first chamber ofthe preferred embodiment of the present invention; and

[0018]FIGS. 8, 8A and 8B are side and partially sectional views of aconventional straight sprinkling gun with mixable detergent.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Please refer to FIGS. 1 to 7. The switch 1 of the straightsprinkling gun includes an outer sleeve 11, a middle sleeve 12, acentral tube 13, a detergent chamber 14, a main flow tube 15 and a flowdamper unit 16.

[0020] The outer sleeve 11 has two open ends. One of the two ends isformed with a radial first flange 111 and a first outer wall 112 outwardextending by a certain height. The inner side of the first flange 111 isformed with a first engaging section 111′ inward extending from theinner circumference thereof by a certain height. The inner wall of theouter sleeve 11 is formed with a projecting section 111″ extending by acertain length and height in a direction normal to the radius of theouter sleeve 11.

[0021] The outer diameter of the middle sleeve 12 is smaller than theinner diameter of the outer sleeve 11, while being larger than the innerdiameter of the first flange 111. The middle sleeve 12 has two openends. One end of the middle sleeve 12 is formed with a second engagingsection 12′ outward extending by a certain height corresponding to thefirst flange 111. The outer wall of the second engaging section 12′ isformed with a dented section 12″ corresponding to the projecting section111″. The second engaging section 12′ and the first engaging section111′ are fitted and engaged with each other and the dented section 12″and the projecting section 111″ are fitted and engaged with each other,whereby the middle sleeve 12 is fixedly disposed in the outer sleeve 11and abuts against the first flange 111.

[0022] The outer circumference of the other end of the middle sleeve 12is formed with a middle wall 121 outward extending by a certain heightand having an outer diameter corresponding to the inner diameter of theouter sleeve 11. By means of the first flange 111 and the middle wall121, the outer side of the middle sleeve 12 is sealed in the outersleeve 11 to form a water flow passage 113. In addition, a predeterminedportion of the inner wall of the middle sleeve 12 is formed with aradial first partitioning face 122.

[0023] The side wall of the middle sleeve 12 between the first flange111 and the first partitioning face 122 is formed with at least oneoutlet 123. The side wall of the middle sleeve 12 opposite to the firstpartitioning face 122 and other than the side wall with the outlet 123is formed with at least one first inlet 124. In this embodiment, theoutlet 123 and the first inlet 124 are a pair and 180 degrees oppositeto each other.

[0024] The outer diameter of the central tube 13 corresponds to theinner diameter of the middle sleeve 12 and has a close end 131 and anopen end 132. The central tube 13 is disposed in the middle sleeve 12with the close end 131 opposite to the first partitioning face 122,whereby the middle sleeve 12 is rotatable about the central tube 13. Theside wall of the central tube 13 is formed with a second inlet 133corresponding to the first inlet 124. The outer side of the close end131 of the central tube 13 is formed with a first connecting section131′ having a certain length and passing through the first partitioningface 122. The outer diameter of the first connecting section 131′ issmaller than the inner diameter of the middle sleeve 12. The innercircumference of the first connecting section 131′ is polygonal.

[0025] The detergent chamber 14 includes a first and a second chambers14A, 14B which are tube bodies with a predetermined length. One end ofthe first chamber 14A is fitted with one end of the second chamber 14B.

[0026] The other end of the first chamber 14A has an outer diametercorresponding to the inner diameter of the first outer wall 112 and isrotatably fitted with the first outer wall 112 and is formed with aradial second flange 141. The second flange 141 is formed with a secondconnecting section 141′ which is a column outward projecting by acertain length and having an outer circumference corresponding to theinner circumference of the first connecting section 131′. The secondconnecting section 141′ is fixedly fitted with the first connectingsection 131′, whereby the outer sleeve 11 and the middle sleeve 12 aresynchronously rotatable about the central tube 13 and the first chamber14A.

[0027] A predetermined portion of the inner wall of the second chamber14B is formed with a radial second partitioning face 142. Thecircumference of the first chamber 14A positioned between the secondflange 141 and the second partitioning face 142 is formed with anincoming hole 143 provided with an openable cover (not shown).

[0028] The main flow tube 15 is composed of a tube body extending fromthe inner circumference of the second flange 141 into the detergentchamber 14 by a predetermined length and another tube body passingthrough the second partitioning face 142 with outer end exposed to thedetergent chamber 14. The two tube bodies are fitted with each other.Alternatively, the main flow tube 15 is formed by a tube body extendingfrom the inner circumference of the second flange 141 into the detergentchamber 14 and passing through the second partitioning face 142 withouter end exposed to the detergent chamber 14. The outer end of the mainflow tube 15 is provided with a brush head or a sprinkling head (notshown) with variable sprinkling pattern.

[0029] The flow damper unit 16 includes a flow-guiding hole 161 and acommunicating section 162.

[0030] The flow-guiding hole 161 is formed by an opening projected fromthe first flange 111 to the second flange 141 corresponding to thesecond inlet 133. The outer circumference of the flow-guiding hole 161is formed with a wall body outward projecting by a predetermined heightand abutting against the first flange 111.

[0031] The communicating section 162 is a channel formed on the outerside of the first flange 111 corresponding to the first inlet 124. Thebottom face of the channel extends to the inner circumference of thefirst flange 111. When rotating the outer sleeve 11 to align thecommunicating section 162 with the flow-guiding hole 161, theflow-guiding hole 161 is not covered by the first flange 111 and theinterior of the detergent chamber 14 communicates with the interior ofthe outer sleeve 11. However, when the communicating section 162 is notaligned with the flow-guiding hole 161, that is, the flow-guiding hole161 is covered by the first flange 111, the interior of the detergentchamber 14 does not communicate with the interior of the outer sleeve11.

[0032] According to the above arrangement, a detergent such as a soapwater is added from the incoming hole 143 into the detergent chamber 14and the incoming hole 143 is closed. Then, water flow is conducted intothe open end 132 of the central tube 13. The using state of the switch 1of the straight sprinkling gun of the present invention is as follows:

[0033] A. The outer sleeve 11 is rotated. When any first inlet 124 isnot aligned with the second inlet 133, no water flow will flow out fromthe main flow tube 15

[0034] B. The outer sleeve 11 is rotated. When the communicating section162 is not aligned with the flow-guiding hole 161, that is, the firstinlet 124 aligned with the communicating section 162 is not aligned withthe second inlet 133, while the other first inlet 124 is aligned withthe second inlet 133, the water passage is: the open end 132 of thecentral tube 13→the second inlet 133→the first inlet 124→the water flowpassage 113→the outlet 123→the second flange 141→the main flow tube15→discharge pure water

[0035] C. The outer sleeve 11 is rotated. When the communicating section162 is aligned with the flow-guiding hole 161, that is, the first inlet124 aligned with the communicating section 162 is aligned with thesecond inlet 133, there are two water passages

[0036] I. The open end 132 of the central tube 13→the second inlet133→the first inlet 124→the water flow passage 113→the outlet 123→themain flow tube 15→discharge pure water

[0037] II. The open end 132 of the central tube 13→the second inlet133→the first inlet 124→the water flow passage 113→the outlet 123→theflow-guiding hole 161→the detergent chamber 14→the flow-guiding hole161→the main flow tube 15→discharge soap water

[0038] The switch 1 of the straight sprinkling gun of the presentinvention has the following advantages:

[0039] 1. The water flow-controlling mechanism is circularly rotatable.The switch is positioned at the holding section of the hand so that auser can operate the switch without moving the palm. This meets humanconfiguration.

[0040] 2. The amount of the discharged water is real-time controlled.

[0041] 3. The kind of discharged water is real-time selected.

[0042] 4. When controlling the water amount or selecting the kind of thewater, the sprinkling operation is not affected.

[0043] In another embodiment, a second outer wall 113 outward extendsfrom the outer circumference of the other end of the outer sleeve 11.The second outer wall 113 has an inner diameter larger than the innerdiameter of the outer sleeve 11. A connecting tube body 134 outwardextends from the open end 132 of the central tube 13. The connectingtube body 134 has an outer diameter smaller than the inner diameter ofthe second outer wall 113.

[0044] The inner wall of the second outer wall 113 is formed with atleast one first locating channel 113′.

[0045] The outer wall of the connecting tube body 134 is formed with asecond locating channel 134′ corresponding to the first locating channel113′ for receiving a locating pin and a spring, whereby when rotatingthe outer sleeve 11, a locating effect is achieved and perceivable by auser.

[0046] The present invention can further have indications respectivelydisposed on the outer wall of the detergent chamber 14 and the outerwall of the first outer wall 112 of the outer sleeve 11 for indicatingusing state.

[0047] A cover body 144 is disposed at the other end of the secondchamber 14B for more sealing the detergent chamber 14. The main flowtube 15 passes through the cover body 144.

[0048] The first connecting section 131′ is locked with the secondconnecting section 141′ by a screw.

[0049] In order to achieve watertight effect, leakproof washers R1, R2,R3, R4, R5, R6 are respectively disposed between the inner wall of themiddle wall 121 and the outer wall of the central tube 13 and betweenthe outer wall of the middle wall 121 and the inner wall of the outersleeve 11 and around the outer circumference of the second inlet 133 andaround the outer circumference of the flow-guiding hole 161 and betweenthe outer wall of the detergent chamber 14 and the inner wall of thefirst outer wall 112 and between the second partitioning face 142 andthe cover body 144.

[0050] The above embodiments are only used to illustrate the presentinvention, not intended to limit the scope thereof. Many modificationsof the above embodiments can be made without departing from the spiritof the present invention.

What is claimed is:
 1. Switch of straight sprinkling gun, comprising: an outer sleeve having two open ends, one of the two ends being formed with a radial first flange and a first outer wall outward extending by a certain height; a middle sleeve, the outer diameter of the middle sleeve being smaller than the inner diameter of the outer sleeve, while being larger than the inner diameter of the first flange, the middle sleeve being fixedly disposed in the outer sleeve, the middle sleeve having two open ends, one end of the middle sleeve abutting against the first flange, the outer circumference of the other end of the middle sleeve being formed with a middle wall outward extending by a certain height and having an outer diameter corresponding to the inner diameter of the outer sleeve, by means of the first flange and the middle wall, the outer side of the middle sleeve being sealed in the outer sleeve to form a water flow passage, a predetermined portion of the inner wall of the middle sleeve being formed with a radial first partitioning face, the side wall of the middle sleeve between the first flange and the first partitioning face being formed with at least one outlet, the side wall of the middle sleeve opposite to the first partitioning face and other than the side wall with the outlet being formed with at least one first inlet; and a central tube, the outer diameter of the central tube corresponding to the inner diameter of the middle sleeve, the central tube having a close end and an open end, the central tube being disposed in the middle sleeve with the close end opposite to the first partitioning face, whereby the middle sleeve is rotatable about the central tube, the side wall of the central tube being formed with a second inlet corresponding to the first inlet.
 2. Switch of straight sprinkling gun as claimed in claim 1, wherein the outer side of the close end of the central tube is formed with a first connecting section passing through the first partitioning face, said switch further comprising; a detergent chamber including a first and a second chambers which are tube bodies with a predetermined length, one end of the first chamber being fitted with one end of the second chamber, the other end of the first chamber having an outer diameter corresponding to the inner diameter of the first outer wall and being rotatably fitted with the first outer wall and being formed with a radial second flange and a second connecting section fixedly connected with the first connecting section whereby the outer sleeve and the middle sleeve are synchronously rotatable about the central tube and the first chamber, a predetermined portion of the inner wall of the second chamber being formed with a radial second partitioning face, the circumference of the first chamber positioned between the second flange and the second partitioning face being formed with an incoming hole provided with an openable cover; a main flow tube composed of a tube body extending from the inner circumference of the second flange into the detergent chamber by a predetermined length and another tube body passing through the second partitioning face with outer end exposed to the detergent chamber, the two tube bodies being fitted with each other; and a flow damper unit including a flow-guiding hole and a communicating section, the flow-guiding hole being formed by an opening projected from the first flange to the second flange corresponding to the second inlet, the outer circumference of the flow-guiding hole being formed with a wall body outward projecting by a predetermined height and abutting against the first flange, the communicating section being a channel formed on the outer side of the first flange corresponding to the first inlet, whereby when rotating the outer sleeve to align the communicating section with the flow-guiding hole, the interior of the detergent chamber communicates with the interior of the outer sleeve, but when the communicating section is not aligned with the flow-guiding hole, the interior of the detergent chamber does not communicate with the interior of the outer sleeve.
 3. Switch of straight sprinkling gun as claimed in claim 2, wherein the main flow tube is formed by a tube body extending from the inner circumference of the second flange into the detergent chamber and passing through the second partitioning face with outer end exposed to the detergent chamber.
 4. Switch of straight sprinkling gun as claimed in claim 1, wherein the inner side of the first flange is formed with a first engaging section and one end of the middle sleeve corresponding to the first flange is formed with a second engaging section, the first and second engaging sections being engaged with each other.
 5. Switch of straight sprinkling gun as claimed in claim 2, wherein the communicating section is a channel, the bottom face of the channel extending to the inner circumference of the first flange.
 6. Switch of straight sprinkling gun as claimed in claim 2, wherein the outer end of the main flow tube is provided with a brush head or a sprinkling head with variable sprinkling pattern.
 7. Switch of straight sprinkling gun as claimed in claim 2, wherein the first connecting section is a tube body outward projecting from outer side of the close end of the central tube by a certain length, the outer diameter of the first connecting section being smaller than the inner diameter of the middle sleeve, the inner circumference of the first connecting section being polygonal, the second connecting section being a column outward projecting by a certain length and having an outer circumference corresponding to the inner circumference of the first connecting section.
 8. Switch of straight sprinkling gun as claimed in claim 7, wherein the first and second connecting sections are fixedly connected by a screw.
 9. Switch of straight sprinkling gun as claimed in claim 4, wherein the first engaging section is a wall body inward projecting from the inner circumference of the first flange by a certain height, the second engaging section being a wall body outward extending from the end edge of the middle sleeve by a certain height.
 10. Switch of straight sprinkling gun as claimed in claim 9, wherein the inner wall of the outer sleeve is formed with a projecting section extending by a certain length and height in a direction normal to the radius of the outer sleeve, the outer wall of the second engaging section being formed with a dented section corresponding to the projecting section for fitting and engaging with the projecting section.
 11. Switch of straight sprinkling gun as claimed in claim 1, wherein there are a pair of outlets.
 12. Switch of straight sprinkling gun as claimed in claim 1, wherein a second outer wall outward extends from the outer circumference of the other end of the outer sleeve, the second outer wall having an inner diameter larger than the inner diameter of the outer sleeve, a connecting tube body outward extending from the open end of the central tube, the connecting tube body having an outer diameter smaller than the inner diameter of the second outer wall, the inner wall of the second outer wall being formed with at least one first locating channel, the outer wall of the connecting tube body being formed with a second locating channel corresponding to the first locating channel for receiving a locating pin and a spring, whereby when rotating the outer sleeve, a locating effect is achieved.
 13. Switch of straight sprinkling gun as claimed in claim 2, wherein indications respectively disposed on the outer wall of the detergent chamber and the outer wall of the first outer wall of the outer sleeve for indicating using state.
 14. Switch of straight sprinkling gun as claimed in claim 2, wherein a cover body is disposed at the other end of the second chamber for more sealing the detergent chamber, the main flow tube passing through the cover body.
 15. Switch of straight sprinkling gun as claimed in claim 1, wherein leakproof washers are respectively disposed between the inner wall of the middle wall and the outer wall of the central tube and between the outer wall of the middle wall and the inner wall of the outer sleeve and around the outer circumference of the second inlet.
 16. Switch of straight sprinkling gun as claimed in claim 2, wherein leakproof washers are respectively disposed between the inner wall of the middle wall and the outer wall of the central tube and between the outer wall of the middle wall and the inner wall of the outer sleeve and around the outer circumference of the second inlet and around the outer circumference of the flow-guiding hole and between the outer wall of the first chamber and inner wall of the first outer wall.
 17. Switch of straight sprinkling gun as claimed in claim 14, wherein a leakproof washer is disposed between the second partitioning face and the cover body. 